Java读取char数据: System.in.read()

public class getchar
{
    public static void main(String[] args)
    throws java.io.IOException //必不可少
    {
        int num = System.in.read(); //读进来的数，默认保存为整数，如果需要输出 刚才输入字符，需要用char进行强制转换(type cast)
        char c = (char) num;
        System.out.println("the char you've just input is: " + c + "
its unicode number is: " + num);
    }
}